As you may know, I'm bigtime into Z80 computerey stuff.  For the past 20 years or so, I've been hacking Pac-Man ROMs, been mainta...

At Interlock , I was handed the old controller board for a gutted 3D printer that was being rebuilt. "Do whatever you want with this...

February 1st sees the end of RetroChallenge RC2016/1.  My entry for this month was to create a calculator for the Commodore/MOS KIM-1, b...

I decided that another experiment/lesson to do on my way to making my calculator app was to learn how to do multibyte math and possibly expe...

I finished up my RLE (Run-Length Encoded) image renderer last night.  It would have been much simpler but there were a few things that I...

I got a little sidetracked while working on the KIM-Uno calculator, playing with video buffers. I had added a video buffer to the desktop K...

One of the functions of this KIM-Uno project involves functionality similar to the stock KIM monitor.  You press buttons 0-9, A-F to enter ...